#!/usr/bin/env python3
# -*- coding: utf-8 -*-

'第一个CUI程序'

from tkinter import *

class Application(Frame):
    def __init__(self,master=None):
        Frame.__init__(self,master)
        self.pack()
        self.createWidgets()

    def createWidgets(self):
        self.helloLabel = Label(self,text='Hello,world!')
        self.helloLabel.pack()
        self.quitButton = Button(self,text='Quit',command=self.quit)
        self.quitButton.pack()

app = Application()
app.master.title('Hello World')
app.mainloop()